---

Hello msl, I'm not sure I followed correctly so please bear with me.
You have twin 25 inch motors on raised jack-plate for proper height setting,yes?
Your whaler if configured for twins and if properly set-up will accommodate 20 inch motors, yes?

I read you have one Opti that will require some service and my thoughts are; would it be feasible to repair damaged outboard, remount your Opti twins straight to transom and source two 20 inch lower unit assemblies and refit. I assume the 25 inch Opti uses a spacer between the mid-section and lower unit? Obviously the connecting studs will need to be changed out for the correct length type.

In past years I have done similar refits to Mercury outboards when rigging powerboats for single, twins and even with triples. It may be an option for you seeing as your already rigged for Mercury's. Maybe you can even refresh the powerheads if it fits into your budget.

Just my "2-cents" on the subject...
Angel M.